package com.imooc.security.core.social.qq.api;

import java.io.IOException;

import org.apache.commons.lang.StringUtils;
import org.springframework.social.oauth2.AbstractOAuth2ApiBinding;
import org.springframework.social.oauth2.TokenStrategy;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * 5.3.3 添加QQ实现类
 * wiki.connect.qq.com
 */
// 这边不能用@component，因为单例会造成安全问题 在QQServiceProvider中用new
public class QQImpl extends AbstractOAuth2ApiBinding implements QQ {
	
	private static final String URL_GET_OPENID = "https://graph.qq.com/oauth2.0/me?access_token=%s";
	
	private static final String URL_GET_USERINFO = "https://graph.qq.com/user/get_user_info?oauth_consumer_key=%s&openid=%s";
	
	private String appId;
	
	private String openId;
	
	private ObjectMapper objectMapper = new ObjectMapper();
	
	/**
	 * 5.3.4 构造方法 获取openId
	 * @param accessToken
	 * @param appId
	 */
	public QQImpl(String accessToken, String appId) {
		super(accessToken,TokenStrategy.ACCESS_TOKEN_PARAMETER);
		this.appId = appId;
		
		String url = String.format(URL_GET_OPENID, accessToken);
		String result = getRestTemplate().getForObject(url, String.class);
		
		System.out.println(result);
		// 5.5.16 改bug
		// this.openId = StringUtils.substringBetween(result, "\"openid\":", "}");
		this.openId = StringUtils.substringBetween(result, "\"openid\":\"", "\"}");
	}

	/**
	 * 5.3.5 获取用户信息
	 * @throws IOException 
	 * @throws JsonMappingException 
	 * @throws JsonParseException 
	 */
	@Override
	public QQUserInfo getUserInfo(){
		String url = String.format(URL_GET_USERINFO, appId, openId);
		String result = getRestTemplate().getForObject(url, String.class);
		
		System.out.println(result);
		
		// 5.5.16 改bug
		/*try {
			return objectMapper.readValue(result, QQUserInfo.class);
		} catch (Exception e) {
			throw new RuntimeException("获取用户信息失败", e);
		}*/
		QQUserInfo userInfo = null;
		try {
			userInfo = objectMapper.readValue(result, QQUserInfo.class);
			userInfo.setOpenId(openId);
			return userInfo;
			
		} catch (Exception e) {
			throw new RuntimeException("获取用户信息失败", e);
		}
	}
	
}
